mail.nextron.ch has no MX records.
Question and response
Question
dig mail.nextron.ch. MX
Answer
The response has no answer records.
Authority
nextron.ch. 3600 SOA dns.nextron.ch. hostmaster.nextron.ch. 2026021002 10800 1800 604800 3600
Additional
dns.nextron.ch. 3600 A 193.108.137.2
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0